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Finding the Fourth Proportional to 100,471.32, 138,651.84 and 55,153.80

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Solution

The fourth proportional to 100,471.32, 138,651.84 and 55,153.80 is: 76,113.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,471.32 : 138,651.84 = 55,153.80 : x
  2. Step 2: Convert to fraction form
    100,471.32/138,651.84 = 55,153.80/x
  3. Step 3: Cross multiply
    100,471.32x = 138,651.84 × 55,153.80
  4. Step 4: Simplify right side
    100,471.32x = 7,647,175,852.99
  5. Step 5: Solve for x
    x = 7,647,175,852.99/100,471.32
  6. Step 6: Final answer
    x = 76,113.02

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